How Aging Affects Digestion and Expert Tips to Improve Gut Health
Plenty of surprises accompany the aging process, from unexpected joint noises to intensified hangovers after minimal alcohol. However, one of the most frustrating changes is how our digestive system often becomes less efficient at processing food. Dr. Sara Attalla, a gastroenterologist at Inspira Health in New Jersey, explains that intestinal issues can emerge at any age but tend to increase as we get older. According to the National Institutes of Health, approximately 60 million to 70 million Americans are impacted by digestive diseases. Common symptoms include heartburn, bloating, abdominal pain, and alterations in bowel habits, such as constipation or diarrhea. Pinpointing the exact cause of digestive problems can be challenging, as they typically result from a complex interplay of aging and lifestyle factors.
How The Aging Process Influences Digestive Function
As we age, the nerves and muscles within the gastrointestinal tract may begin to malfunction, leading to changes in how digestive organs operate and communicate. This often results in a slower digestion process and disorganized signals between organs. For example, reduced effectiveness in esophageal movement and swallowing muscles can elevate rates of esophageal reflux, commonly known as GERD, where stomach contents flow back up. Additionally, slower stomach motility can cause food to linger, triggering indigestion.
Dr. Attalla notes that the stomach lining can thin with age, increasing susceptibility to injuries from inflammation. Over time, decreased production of prostaglandins, hormone-like substances involved in stomach acid secretion and GI muscle function, reduces the protective lining of the stomach, raising the risk of gastritis and ulcers. In the small bowel, slower motility can lead to bacterial overgrowth, causing bloating and diarrhea, as highlighted by Dr. Sunana Sohi, a board-certified gastroenterologist at Gastroenterology Health Partners in Kentucky.
If motility slows significantly in the colon, it may result in constipation and diverticulosis, a condition where small sacs form in the colon wall, potentially leading to symptoms like bleeding and inflammation. Chronic health conditions that accumulate with age, such as arthritis and cardiovascular diseases, can further exacerbate gut motility issues by limiting physical activity. Dr. Pritesh Mutha, an associate professor at McGovern Medical School, emphasizes that inactivity directly impacts gut movement. Moreover, medications used to manage these conditions, including NSAIDs like aspirin and ibuprofen, often cause gastrointestinal side effects such as nausea, constipation, diarrhea, abdominal pain, and ulcers.
The Best Ways To Optimize Your Digestion As You Get Older
While age-related digestive changes can be frustrating, experts stress that proactive measures can mitigate their effects. Here are key strategies recommended by healthcare professionals:
- Chewing Better: Digestion starts in the mouth. Dr. Mutha explains that salivary enzymes help break down starch and fat, reducing the workload on the GI tract. The alkaline pH of saliva also neutralizes acid in the esophagus, alleviating GERD symptoms. Cutting food into smaller pieces and chewing each bite 15 to 20 times can aid swallowing and prevent complications.
- Stimulating Saliva Production: Saliva production often declines with age, affecting chewing and swallowing. Dr. Sohi points out that dry mouth is twice as common in people taking daily medications. Using over-the-counter saliva substitutes or sipping water between bites can help manage this issue during meals.
- Eating More Plant-Based, Less Processed Foods: A diet low in processed foods and rich in plant-based diversity optimizes digestion. Dr. Sohi warns that processed foods can disrupt the gut microbiome, leading to dysbiosis, an imbalance linked to digestive diseases. Plant-based diets increase fiber intake, which is essential for bowel regularity. Dr. Mutha adds that fiber bulks up stool, making bowel movements more efficient and reducing risks like fecal incontinence and diarrhea.
- Staying Hydrated: Adequate hydration is crucial to prevent constipation, especially when increasing fiber intake. The National Council on Aging recommends drinking one-third of your body weight in fluid ounces daily. For example, a person weighing 150 pounds should consume about 50 ounces of water per day.
- Moving More: Exercise stimulates GI tract motility, aiding digestion. Dr. Sohi advises against lying down after eating, as it can promote acid reflux and hinder motility. Dr. Mutha suggests walking for 15 minutes after meals to activate the stomach and improve gastric emptying.
- Getting Enough Sleep: Sleep serves as a healing mechanism for the body. Dr. Mutha notes that insufficient sleep, below the recommended seven to nine hours per night, can weaken the gut barrier and immunity. Research suggests sleep deprivation may increase microscopic inflammation in the bowel, leading to gastrointestinal symptoms.
- Mastering Your Medications: All medications can have GI side effects, even those prescribed for digestive issues. Dr. Mutha emphasizes taking medications as directed to minimize risks. For instance, NSAIDs should not be taken on an empty stomach, and acid-suppressive medicines should be consumed 30 minutes before breakfast. If side effects occur, consult your doctor.
When To Check In With Your Doctor About Your Digestive Issues
Even if you suspect digestive problems are age-related or lifestyle-induced, it is important not to assume and to discuss symptoms with a healthcare provider. Dr. Neena Mohan, a gastroenterologist at Temple University, advises that underlying serious causes may be present. Seek medical attention if you experience persistent changes in bowel habits, trouble swallowing, abdominal pain, nausea, vomiting, unexplained weight loss, or blood in stool. Dr. Attalla explains that doctors may start with blood tests, prescribe medications, or recommend further testing like endoscopy or colonoscopy based on the issue.
